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13. Stress and Workload. Figure 13.1 A representation of stress effects. ENVIRONMENTAL STRESSORS. Motion High-frequency Vibration Low-Frequency Vibration and Motion Sickness Thermal Stress Air Quality. PSYCHOLOGICAL STRESSORS. Cognitive Appraisal Ethical Issues. Level of Arousal. - PowerPoint PPT Presentation
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고려대학교 산업경영공학과
IMEN 315 인간공학
13. Stress and Workload
고려대학교 산업경영공학과
IMEN 315 인간공학
Figure 13.1 A representation of stress effects
고려대학교 산업경영공학과
IMEN 315 인간공학
ENVIRONMENTAL STRESSORS
고려대학교 산업경영공학과
IMEN 315 인간공학
MotionHigh-frequency VibrationLow-Frequency Vibration and Motion Sick-
nessThermal StressAir Quality
고려대학교 산업경영공학과
IMEN 315 인간공학
PSYCHOLOGICAL STRESSORS
고려대학교 산업경영공학과
IMEN 315 인간공학
Cognitive AppraisalEthical Issues
고려대학교 산업경영공학과
IMEN 315 인간공학
Level of Arousal
Figure 13.2 The Yerkes-Dodson law showing the relationship between level of arousal (induced by stress) and performance. The OLA is shown to be higher for less complex tasks.
고려대학교 산업경영공학과
IMEN 315 인간공학
Performance Changes with OverarousalRemediation of Psychological Stress
고려대학교 산업경영공학과
IMEN 315 인간공학
LIFE STRESS
고려대학교 산업경영공학과
IMEN 315 인간공학
WORKLOAD OVERLOAD
고려대학교 산업경영공학과
IMEN 315 인간공학
WorkloadThe timeline model
Figure 13.3 Timeline analysis. The percentage of workload at each point is computed as the average number of tasks per unit time, within each window. Shown at the bottom of the figure is the computed workload value TR/TA.
고려대학교 산업경영공학과
IMEN 315 인간공학
고려대학교 산업경영공학과
IMEN 315 인간공학
Mental Workload MeasurementPrimary task measuresSecondary task methodsPhysiological measuresSubjective measuresWorkload dissociations
고려대학교 산업경영공학과
IMEN 315 인간공학
FATIGUE AND SLEEP DISRUPTION
고려대학교 산업경영공학과
IMEN 315 인간공학
Vigilance and UnderarousalCauses of the vigilance decrement
TimeEvent salienceSignal rateArousal level
Vigilance remediation
고려대학교 산업경영공학과
IMEN 315 인간공학
Sleep DisruptionSleep Deprivation and Performance Ef-
fectsCircadian Rhythms
고려대학교 산업경영공학과
IMEN 315 인간공학
Figure 13.5Graph plotting mean sleep latency (top), circadian rhythms (body temperature), and sleep duration (Bottom) against time for two day-night cycles. The bars around sleep duration represent the variability.
고려대학교 산업경영공학과
IMEN 315 인간공학
Circadian DisruptionJet lagShift work
Remediation to Sleep disruption
고려대학교 산업경영공학과
IMEN 315 인간공학
Figure 13.6Graph showing how performance on four kinds of tasks varies as a function of circadian rhythms, shown for a one day cycle.
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